Paradise with my boys ??

A photo posted by Kristin Cavallari (@kristincavallari) on Apr 2, 2015 at 12:18pm PDT

It may still be chilly in some parts of the U.S., but Kristin Cavallari (and her fabulous bikini bod) have escaped the lingering winter temps for a tropical getaway. 

On Thursday, April 2, The Hills alum, 28, shared a rare photo on the beach with her 2-year-old son Camden via Instagram, writing, “Paradise with my boys.” 

Cavallari, who welcomed her second son Jax in May 2014, showed off her toned backside in the black and white two-piece, looking fit and muscular against the turquoise ocean backdrop. 

Lately the Chinese Laundry shoe designer has been enjoying family life with her sons and husband, Chicago Bears quarterback Jay Cutler. Back in February, the family got a German shepherd puppy, which Cavallari shared a picture of, writing, “Because 2 boys under the age of 3 weren't enough.”

Because 2 boys under the age of 3 weren't enough.

A photo posted by Kristin Cavallari (@kristincavallari) on Feb 28, 2015 at 11:26am PST